Gillnet Fishing in Europe: Status, Economic Importance, and Sustainability

Gillnet fishing is a selective method widely used in European coastal regions. The trammel net, made of three layers of nets, traps fish attempting to pass through the mesh, getting entangled in the finer central layer. This technique, while less intensive than trawling, presents its own challenges and advantages, particularly concerning environmental impact and resource sustainability.

This article explores the role of gillnet fishing in Europe’s economy, the targeted species, environmental issues, and ongoing efforts for regulation and modernization of the practice.

What is Gillnet Fishing?
A trammel net consists of three layers of mesh with different sizes. Fish pass through the larger mesh of the outer net but become trapped in the smaller central layer. This method is particularly effective for catching demersal species such as seabass, sole, and turbot, which are of significant commercial importance in Europe.

Economic Importance of Gillnet Fishing in Europe
Gillnet fishing is economically significant in several European coastal areas, especially in countries like France, Spain, Italy, and Portugal. These nations, with extensive coastlines and strong maritime traditions, use this technique primarily in small-scale artisanal fisheries. For instance, in France, regions like Brittany and Normandy see substantial contributions from gillnet fishing to local fishermen’s incomes.

The European Union supports this artisanal form of fishing, as it is generally viewed as more environmentally friendly and selective than more intensive methods such as trawling. In terms of volume, this method accounts for only a fraction of Europe’s total catch but remains vital for local markets and low-ecological-impact distribution chains.

Targeted Species and Market
Gillnets are used to capture various commercially valuable fish species. Key targets include:

• European seabass (Dicentrarchus labrax)
• Sole (Solea solea)
• Turbot (Scophthalmus maximus)
• Hake (Merluccius merluccius)

These species, highly prized in European markets, are primarily sold locally but also exported to meet high demand. For example, demand for sole and seabass is especially high in France and Spain, with prices often influenced by seasonality and fish quality.

Regulations and Quotas
As with all fishing practices in Europe, gillnet fishing is subject to strict regulations to ensure the sustainability of fish stocks. The European Union imposes fishing quotas on certain species to prevent overfishing and protect marine biodiversity. These quotas are adjusted based on scientific recommendations regarding stock health and ecosystem conditions.

In some countries, additional regulations apply to gillnet fishing to minimize bycatch and protect sensitive marine habitats. For instance, in the Mediterranean, where gillnet fishing is common, there are restrictions on fishing areas and net use duration to safeguard juvenile fish and spawning zones.

Environmental Challenges
While gillnet fishing is considered relatively selective, it is not without environmental concerns. One of the main challenges is bycatch, where non-target species, such as marine mammals or birds, are unintentionally caught. However, compared to more intensive methods like trawling, gillnet fishing has a lower impact on seabeds since it does not scrape benthic habitats.

Lost or abandoned nets, known as ghost nets, can also pose a significant problem, continuing to capture marine species and disrupt ecosystems. Several European countries have initiated programs to recover lost nets and encourage fishermen to report or retrieve their abandoned gear.

The Role of Technological Innovation
Technological innovation plays an increasingly important role in reducing the environmental impact of gillnet fishing. Projects have been launched to develop more selective nets that allow juvenile fish and non-target species to escape more easily. Additionally, electronic sensors are sometimes used to monitor nets in real time, allowing fishermen to reduce the time nets remain in the water, thus decreasing bycatch.

In some regions, “smart” nets are being developed. These devices can detect the presence of non-target species or small fish and automatically adjust mesh sizes to release them. Such innovations have the potential to transform gillnet fishing into an even more environmentally friendly practice.

Consumers and the Growing Demand for Sustainable Products
As with other forms of fishing, European consumers are increasingly concerned with the origin and sustainability of the seafood they purchase. Certifications such as the Marine Stewardship Council (MSC) and other eco-labels are often demanded by consumers and retailers, ensuring that fish caught using gillnets come from sustainable practices. In response to this growing demand, more fishermen are adopting practices that meet sustainability criteria.

In local markets, this awareness translates into a preference for locally caught fish, often by artisanal methods like gillnet fishing. By purchasing fish from small local fisheries, consumers support less intensive fishing methods and contribute to the preservation of fishing communities.

Gillnet fishing, though less widespread than trawling, plays a crucial role in Europe’s maritime economy, particularly for artisanal and local fisheries. It offers a more selective and less destructive capture method, but challenges remain, especially regarding environmental sustainability and bycatch regulation. With technological innovation and stricter regulations, this method can evolve into an even more environmentally respectful approach to fishing.

The future of gillnet fishing depends on the ability of fishermen, policymakers, and consumers to collaborate in ensuring a balance between economic prosperity and the conservation of European oceans.